When presenting  t³ / t²  by programming

   $formula = maple("printf(MathML:-ExportPresentation(t^3/t^2))");

MapleTA will automatically simplify this to the result:  t

How can I force MapleTA to not simplify this expression?

Thanks!

In MapleTA, how can I carry a value that is calculated/entered in one question over to another question?

As far as I know all variables in MapleTA (such as $v) are local variables (defined within the question) and not global variables (shared by multiple questions).